elysia

Name: elysia
Availability: InStock
Author: newkub

Develop type-safe backend services with Elysia on the Bun runtime.

Updated Jan 28, 2026

Search Tags:#type safety #typescript #performance #api #backend #bun #elysia

Ready to run

npx skills add https://github.com/newkub/skills --skill elysia-newkub

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: elysia
Source: https://github.com/newkub/skills/tree/main/lib-elysia
Command: npx skills add https://github.com/newkub/skills --skill elysia-newkub

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill streamlines backend development by enforcing end-to-end type safety and optimizing performance, reducing boilerplate code and potential runtime errors.

Core Features & Use Cases

End-to-End Type Safety: Ensures consistency between client and server with automatic type inference from schemas.
Schema as Single Source of Truth: Validates requests and responses, generates OpenAPI documentation, and enables type-safe client-server communication.
High Performance: Optimized for the Bun runtime, offering performance competitive with Go and Rust frameworks.
Use Case: Develop a robust, type-safe REST API for a web application, ensuring that data sent to and received from the server is always validated and correctly typed.

Quick Start

Create a new Elysia project using the command bun create elysia app.

Frequently Asked Questions about elysia

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I build a type-safe backend API with Elysia and Bun?▼

To build a type-safe backend API with Elysia and Bun, use Elysia's built-in schema validation for requests and responses. This enforces end-to-end type safety through automatic type inference, reducing boilerplate code and runtime errors.

How do I generate OpenAPI documentation from my Elysia backend schemas?▼

You can generate OpenAPI documentation from your Elysia backend schemas by treating the schema as the single source of truth. Elysia uses this schema to automatically infer types and produce OpenAPI docs for your REST API.

What is the best way to ensure type-safe client-server communication in a TypeScript backend?▼

The best way to ensure type-safe client-server communication in a TypeScript backend is using Eden Treaty with Elysia. It leverages automatic type inference from API schemas to provide end-to-end consistency without manual type synchronization.

Do I need the Bun runtime to use Elysia for backend development?▼

Yes, you need the Bun runtime to use Elysia effectively. Elysia is optimized for Bun to deliver high performance competitive with Go and Rust frameworks, ensuring maximum backend speed and developer experience.

How does schema validation improve backend performance in Elysia?▼

Schema validation in Elysia improves backend performance by using the schema as a single source of truth to validate requests and responses early. Combined with the Bun runtime, this reduces errors and maintains high throughput.